I get the PDF metadatas using itextsharp as follows:
var pdf = new PdfReader(__PDF_PATH__);
var main = new[] { "Title", "Subject", "Creator", "Author", "Producer", "Keywords", "ModDate", "CreationDate" };
var metadatas = pdf.Info; // returns Dictionary<string, string> metadatas
The keys of the dictionary are as in the main array. I want to sort the dictionary's keys according to the given main array. But I did not manage.
you can look at this answer here: Sorting a Dictionary in place with respect to keys
or you can look at this approach here: https://www.dotnetperls.com/sort-dictionary
but basically you cant do it in dictionary. you can convert to other data structure.
As other folks have mentioned, a Dictionary has no order, and you can't sort it.
Depending on what you want to do with your metadatas dictionary, you could use your main array to copy the data into a different data structure, such as a SortedDictionary, a SortedList, or a List<List<string>.